I bought a used Tek 222PS handheld scope, a model specialized for power mains troubleshooting. It has two isolated channels (isolated grounds) and is rated at 600v input. Input is via (5 mm) miniature 10x scope probes.
Original accessories included an Industrial Lead Set (p/n 012-1392-00) which is a pair of DMM test leads. You plug the miniature scope probe (after removing the tip) into one end of the positive test lead and use whatever DMM-type of probe or alligator clip, etc. on the other end. The negative test lead plugs into the probe in place of the probe's ground lead clip.
This test lead set (an accessory for this one scope model only) is missing and n/a from Tektronix so I need to find a way to adapt the miniature probe to banana plug (female). Second acceptable solution would be to adapt mini scope probe to BNC and use a BNC-to-banana (preferably single) adapter. (I presume that the solution for the negative lead is to simply graft a DMM test lead to a scope ground clip.)
Note that I'll be measuring mains voltages where both test leads will be "hot", so direct adaptation from mini scope probe to banana is preferred, which would minimize extraneous metal bits (ie, BNC couplers) that will be hot during connection. (Obviously, insulating is necessary with whatever solution is found.)
I've Googled but cannot find any appropriate adapter that will connect to mini scope probe. One or two will adapt a full-size scope probe:
It's times like this that I hold high hopes for the collective experience and intellect to work together to help discover an elegant solution. I look forward to many creative suggestions (c: